Trace number 312219

Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided into four (or five) parts:
  1. SOLVER DATA
    This is the output of the solver (stdout and stderr).
    Note that some very long lines in this section may be truncated by your web browser ! In such a case, you may want to use the "Download as text" link to get the trace as a text file.

    When the --timestamp option is passed to the runsolver program, each line output by the solver is prepended with a timestamp which indicates at what time the line was output by the solver. Times are relative to the start of the program, given in seconds, and are wall clock time (not CPU time).

    As some 'v lines' may be very long (sometimes several megabytes), the 'v line' output by your solver may be split on several lines to help limit the size of the trace recorded in the database. In any case, the exact output of your solver is preserved in a trace file.
  2. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.
  3. CONVERSION SCRIPT DATA (Optionnal)
    When a conversion script is used, this section shows the messages that were output by the conversion script.
  4. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to X seconds (see the parameters in the trace). After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to X+30 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (see the parameters in the trace).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  5. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provides some useful information on the computer.

Solver answer on this benchmark

Solver NameAnswerCPU timeWall clock time
minisat SAT 2007 (with assertions)UNSAT 3.2965 3.29801

General information on the benchmark

Namerandom/2+p/p0.8/v1665/
unif2p-p0.8-v1665-c5178-S1104990816-03-UNSAT.cnf
MD5SUMa72030f9b5b8bc8b27629e6299239dd6
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark1.27281
Satisfiable
(Un)Satisfiability was proved
Number of variables1665
Number of clauses5177
Sum of the clauses size14496
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 21035
Number of clauses of size 34142
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.00	c This is MiniSat 2.0 (Feb 1 2007, SAT-Competition version)
0.00/0.00	c ============================[ Problem Statistics ]=============================
0.00/0.00	c |                                                                             |
0.00/0.00	c |  Number of variables:  1665                                                 |
0.00/0.00	c |  Number of clauses:    5177                                                 |
0.00/0.00	c |  Parsing time:         0.01         s                                       |
0.00/0.01	c ============================[ Search Statistics ]==============================
0.00/0.01	c | Conflicts |          ORIGINAL         |          LEARNT          | Progress |
0.00/0.01	c |           |    Vars  Clauses Literals |    Limit  Clauses Lit/Cl |          |
0.00/0.01	c ===============================================================================
0.00/0.01	c |         0 |    1402     4768    14215 |     1589        0    nan |  0.000 % |
0.00/0.02	c |       101 |    1399     4768    14215 |     1748      100     16 |  0.901 % |
0.00/0.03	c |       252 |    1387     4673    13946 |     1923      251     14 |  0.901 % |
0.00/0.05	c |       478 |    1387     4673    13946 |     2115      477     15 |  0.901 % |
0.00/0.07	c |       815 |    1387     4673    13946 |     2326      814     15 |  0.901 % |
0.10/0.11	c |      1321 |    1387     4673    13946 |     2559     1320     16 |  0.901 % |
0.10/0.18	c |      2080 |    1387     4673    13946 |     2815     2079     16 |  0.901 % |
0.20/0.28	c |      3221 |    1387     4673    13946 |     3097     1769     15 |  0.902 % |
0.40/0.45	c |      4931 |    1387     4673    13946 |     3406     1840     17 |  0.901 % |
0.61/0.70	c |      7495 |    1386     4667    13930 |     3747     2381     15 |  0.961 % |
1.02/1.09	c |     11342 |    1386     4667    13930 |     4122     2377     14 |  0.962 % |
1.63/1.70	c |     17108 |    1386     4667    13930 |     4534     3885     17 |  0.961 % |
2.55/2.64	c |     25757 |    1381     4633    13832 |     4988     2740     15 |  1.263 % |
3.27/3.29	c ===============================================================================
3.27/3.29	c restarts              : 13
3.27/3.29	c conflicts             : 31610          (9601 /sec)
3.27/3.29	c decisions             : 39070          (1.86 % random) (11866 /sec)
3.27/3.29	c propagations          : 5748089        (1745813 /sec)
3.27/3.29	c conflict literals     : 531448         (41.67 % deleted)
3.27/3.29	c Memory used           : 2.73 MB
3.27/3.29	c CPU time              : 3.2925 s
3.27/3.29	c 
3.27/3.29	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node41/watcher-312219-1172583975 -o ROOT/results/node41/solver-312219-1172583975 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/312219-1172583975/minisat /tmp/evaluation/312219-1172583975/instance-312219-1172583975.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 1843200 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 1894400 KiB
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.86 0.97 0.99 3/64 20381
/proc/meminfo: memFree=1809040/2055920 swapFree=4172320/4192956
[pid=20381] ppid=20379 vsize=2176 CPUtime=0
/proc/20381/stat : 20381 (minisat) R 20379 20381 19075 0 -1 4194304 205 0 0 0 0 0 0 0 18 0 1 0 278353505 2228224 189 18446744073709551615 134512640 135078472 4294956704 18446744073709551615 134710340 0 0 4096 3 0 0 0 17 1 0 0
/proc/20381/statm: 544 189 58 138 0 403 0

[startup+0.106162 s]
/proc/loadavg: 0.86 0.97 0.99 3/64 20381
/proc/meminfo: memFree=1809040/2055920 swapFree=4172320/4192956
[pid=20381] ppid=20379 vsize=2396 CPUtime=0.1
/proc/20381/stat : 20381 (minisat) R 20379 20381 19075 0 -1 4194304 288 0 0 0 10 0 0 0 18 0 1 0 278353505 2453504 272 18446744073709551615 134512640 135078472 4294956704 18446744073709551615 134550262 0 0 4096 3 0 0 0 17 1 0 0
/proc/20381/statm: 599 272 73 138 0 458 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 2396

[startup+0.514196 s]
/proc/loadavg: 0.86 0.97 0.99 3/64 20381
/proc/meminfo: memFree=1809040/2055920 swapFree=4172320/4192956
[pid=20381] ppid=20379 vsize=2528 CPUtime=0.51
/proc/20381/stat : 20381 (minisat) R 20379 20381 19075 0 -1 4194304 325 0 0 0 51 0 0 0 21 0 1 0 278353505 2588672 309 18446744073709551615 134512640 135078472 4294956704 18446744073709551615 134550521 0 0 4096 3 0 0 0 17 1 0 0
/proc/20381/statm: 632 309 73 138 0 491 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 2528

[startup+1.33427 s]
/proc/loadavg: 0.87 0.97 0.99 2/65 20382
/proc/meminfo: memFree=1808008/2055920 swapFree=4172320/4192956
[pid=20381] ppid=20379 vsize=2660 CPUtime=1.33
/proc/20381/stat : 20381 (minisat) R 20379 20381 19075 0 -1 4194304 362 0 0 0 133 0 0 0 25 0 1 0 278353505 2723840 346 18446744073709551615 134512640 135078472 4294956704 18446744073709551615 134550582 0 0 4096 3 0 0 0 17 1 0 0
/proc/20381/statm: 665 346 73 138 0 524 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 2660

[startup+2.97041 s]
/proc/loadavg: 0.87 0.97 0.99 2/65 20382
/proc/meminfo: memFree=1807752/2055920 swapFree=4172320/4192956
[pid=20381] ppid=20379 vsize=2792 CPUtime=2.96
/proc/20381/stat : 20381 (minisat) R 20379 20381 19075 0 -1 4194304 391 0 0 0 296 0 0 0 25 0 1 0 278353505 2859008 375 18446744073709551615 134512640 135078472 4294956704 18446744073709551615 134550729 0 0 4096 3 0 0 0 17 1 0 0
/proc/20381/statm: 698 375 73 138 0 557 0
Current children cumulated CPU time (s) 2.96
Current children cumulated vsize (KiB) 2792

Solver just ended. Dumping a history of the last processes samples

[startup+3.27644 s]
/proc/loadavg: 0.87 0.97 0.99 2/65 20382
/proc/meminfo: memFree=1807752/2055920 swapFree=4172320/4192956
[pid=20381] ppid=20379 vsize=2792 CPUtime=3.27
/proc/20381/stat : 20381 (minisat) R 20379 20381 19075 0 -1 4194304 397 0 0 0 327 0 0 0 25 0 1 0 278353505 2859008 381 18446744073709551615 134512640 135078472 4294956704 18446744073709551615 134551032 0 0 4096 3 0 0 0 17 1 0 0
/proc/20381/statm: 698 381 73 138 0 557 0
Current children cumulated CPU time (s) 3.27
Current children cumulated vsize (KiB) 2792

Child status: 0
Real time (s): 3.29801
CPU time (s): 3.2965
CPU user time (s): 3.2935
CPU system time (s): 0.002999
CPU usage (%): 99.9542
Max. virtual memory (cumulated for all children) (KiB): 2792

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 3.2935
system time used= 0.002999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 403
page faults= 0
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 8
involuntary context switches= 2

runsolver used 0.005999 second user time and 0.011998 second system time

The end

Launcher Data (download as text)

Begin job on node41 on Tue Feb 27 13:46:16 UTC 2007

IDJOB= 312219
IDBENCH= 20335
IDSOLVER= 109
FILE ID= node41/312219-1172583975

PBS_JOBID= 3971916

Free space on /tmp= 66559 MiB

SOLVER NAME= minisat SAT 2007
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.8/v1665/unif2p-p0.8-v1665-c5178-S1104990816-03-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/312219-1172583975/minisat /tmp/evaluation/312219-1172583975/instance-312219-1172583975.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node41/watcher-312219-1172583975 -o ROOT/results/node41/solver-312219-1172583975 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/312219-1172583975/minisat /tmp/evaluation/312219-1172583975/instance-312219-1172583975.cnf            

META MD5SUM SOLVER= 120abd248b069e44985635f055606c5a
MD5SUM BENCH=  a72030f9b5b8bc8b27629e6299239dd6

RANDOM SEED= 776072165

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node41.alineos.net 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005 x86_64 x86_64 x86_64 GNU/Linux

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.231
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5914.62
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.231
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1809576 kB
Buffers:         34060 kB
Cached:         150884 kB
SwapCached:      14908 kB
Active:         117528 kB
Inactive:        89196 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1809576 kB
SwapTotal:     4192956 kB
SwapFree:      4172320 kB
Dirty:            1164 kB
Writeback:           0 kB
Mapped:          15764 kB
Slab:            25588 kB
Committed_AS:   568496 kB
PageTables:       1476 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66559 MiB

End job on node41 on Tue Feb 27 13:46:19 UTC 2007